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livetrax/gtk2_ardour/editor_tempodisplay.cc
nick_m 33e95a1577 rename Tempo _beats_per_minute to _note_types_per_minute, provide pulse helpers.
- adds quarter_notes_per_minute(), note_divisions_per_minute (double)
	  pulses_per_minute() and frames_per_quarter_note()

	- this should be a no-op except for the use of tempo by
	  the vst callback which definitely uses quarter notes per minute.

	- the XML node for TempoSection named 'beats-per-minute'
	  has been renamed.
2016-11-11 03:37:08 +11:00

579 lines
16 KiB
C++

/*
Copyright (C) 2002 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifdef WAF_BUILD
#include "gtk2ardour-config.h"
#endif
#include <cstdio> // for sprintf, grrr
#include <cstdlib>
#include <cmath>
#include <string>
#include <climits>
#include "pbd/error.h"
#include "pbd/memento_command.h"
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/gtk_ui.h>
#include "ardour/session.h"
#include "ardour/tempo.h"
#include <gtkmm2ext/doi.h>
#include <gtkmm2ext/utils.h>
#include "canvas/canvas.h"
#include "canvas/item.h"
#include "canvas/line_set.h"
#include "editor.h"
#include "marker.h"
#include "tempo_dialog.h"
#include "rgb_macros.h"
#include "gui_thread.h"
#include "time_axis_view.h"
#include "tempo_lines.h"
#include "ui_config.h"
#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;
using namespace Gtkmm2ext;
using namespace Editing;
void
Editor::remove_metric_marks ()
{
/* don't delete these while handling events, just punt till the GUI is idle */
for (Marks::iterator x = metric_marks.begin(); x != metric_marks.end(); ++x) {
delete_when_idle (*x);
}
metric_marks.clear ();
for (Curves::iterator x = tempo_curves.begin(); x != tempo_curves.end(); ++x) {
delete (*x);
}
tempo_curves.clear ();
}
void
Editor::draw_metric_marks (const Metrics& metrics)
{
char buf[64];
double max_tempo = 0.0;
double min_tempo = DBL_MAX;
remove_metric_marks (); // also clears tempo curves
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
const MeterSection *ms;
const TempoSection *ts;
if ((ms = dynamic_cast<const MeterSection*>(*i)) != 0) {
snprintf (buf, sizeof(buf), "%g/%g", ms->divisions_per_bar(), ms->note_divisor ());
if (ms->position_lock_style() == MusicTime) {
metric_marks.push_back (new MeterMarker (*this, *meter_group, UIConfiguration::instance().color ("meter marker music"), buf,
*(const_cast<MeterSection*>(ms))));
} else {
metric_marks.push_back (new MeterMarker (*this, *meter_group, UIConfiguration::instance().color ("meter marker"), buf,
*(const_cast<MeterSection*>(ms))));
}
} else if ((ts = dynamic_cast<const TempoSection*>(*i)) != 0) {
if (UIConfiguration::instance().get_allow_non_quarter_pulse()) {
snprintf (buf, sizeof (buf), "%.3f/%.0f", ts->note_types_per_minute(), ts->note_type());
} else {
snprintf (buf, sizeof (buf), "%.3f", ts->note_types_per_minute());
}
max_tempo = max (max_tempo, ts->note_types_per_minute());
min_tempo = min (min_tempo, ts->note_types_per_minute());
tempo_curves.push_back (new TempoCurve (*this, *tempo_group, UIConfiguration::instance().color ("tempo curve"),
*(const_cast<TempoSection*>(ts)), ts->frame(), false));
if (ts->position_lock_style() == MusicTime) {
metric_marks.push_back (new TempoMarker (*this, *tempo_group, UIConfiguration::instance().color ("tempo marker music"), buf,
*(const_cast<TempoSection*>(ts))));
} else {
metric_marks.push_back (new TempoMarker (*this, *tempo_group, UIConfiguration::instance().color ("tempo marker"), buf,
*(const_cast<TempoSection*>(ts))));
}
}
}
const double min_tempo_range = 5.0;
const double tempo_delta = fabs (max_tempo - min_tempo);
if (tempo_delta < min_tempo_range) {
max_tempo += min_tempo_range - tempo_delta;
min_tempo += tempo_delta - min_tempo_range;
}
for (Curves::iterator x = tempo_curves.begin(); x != tempo_curves.end(); ) {
Curves::iterator tmp = x;
(*x)->set_max_tempo (max_tempo);
(*x)->set_min_tempo (min_tempo);
++tmp;
if (tmp != tempo_curves.end()) {
(*x)->set_position ((*x)->tempo().frame(), (*tmp)->tempo().frame());
} else {
(*x)->set_position ((*x)->tempo().frame(), UINT32_MAX);
}
++x;
}
for (Marks::iterator x = metric_marks.begin(); x != metric_marks.end(); ++x) {
TempoMarker* tempo_marker;
if ((tempo_marker = dynamic_cast<TempoMarker*> (*x)) != 0) {
tempo_marker->update_height_mark ((tempo_marker->tempo().note_types_per_minute() - min_tempo) / max (10.0, max_tempo - min_tempo));
}
}
}
void
Editor::tempo_map_changed (const PropertyChange& /*ignored*/)
{
if (!_session) {
return;
}
ENSURE_GUI_THREAD (*this, &Editor::tempo_map_changed, ignored);
if (tempo_lines) {
tempo_lines->tempo_map_changed();
}
compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + current_page_samples());
std::vector<TempoMap::BBTPoint> grid;
if (bbt_ruler_scale != bbt_show_many) {
compute_current_bbt_points (grid, leftmost_frame, leftmost_frame + current_page_samples());
}
_session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
draw_measures (grid);
update_tempo_based_rulers ();
}
struct CurveComparator {
bool operator() (TempoCurve const * a, TempoCurve const * b) {
return a->position() < b->position();
}
};
void
Editor::marker_position_changed ()
{
if (!_session) {
return;
}
ENSURE_GUI_THREAD (*this, &Editor::tempo_map_changed);
if (tempo_lines) {
tempo_lines->tempo_map_changed();
}
double max_tempo = 0.0;
double min_tempo = DBL_MAX;
for (Marks::iterator x = metric_marks.begin(); x != metric_marks.end(); ++x) {
TempoMarker* tempo_marker;
MeterMarker* meter_marker;
const TempoSection *ts;
const MeterSection *ms;
if ((tempo_marker = dynamic_cast<TempoMarker*> (*x)) != 0) {
if ((ts = &tempo_marker->tempo()) != 0) {
tempo_marker->set_position (ts->frame ());
char buf[64];
if (UIConfiguration::instance().get_allow_non_quarter_pulse()) {
snprintf (buf, sizeof (buf), "%.3f/%.0f", ts->note_types_per_minute(), ts->note_type());
} else {
snprintf (buf, sizeof (buf), "%.3f", ts->note_types_per_minute());
}
tempo_marker->set_name (buf);
max_tempo = max (max_tempo, ts->note_types_per_minute());
min_tempo = min (min_tempo, ts->note_types_per_minute());
}
}
if ((meter_marker = dynamic_cast<MeterMarker*> (*x)) != 0) {
if ((ms = &meter_marker->meter()) != 0) {
meter_marker->set_position (ms->frame ());
}
}
}
tempo_curves.sort (CurveComparator());
const double min_tempo_range = 5.0;
const double tempo_delta = fabs (max_tempo - min_tempo);
if (tempo_delta < min_tempo_range) {
max_tempo += min_tempo_range - tempo_delta;
min_tempo += tempo_delta - min_tempo_range;
}
for (Curves::iterator x = tempo_curves.begin(); x != tempo_curves.end(); ) {
Curves::iterator tmp = x;
(*x)->set_max_tempo (max_tempo);
(*x)->set_min_tempo (min_tempo);
++tmp;
if (tmp != tempo_curves.end()) {
(*x)->set_position ((*x)->tempo().frame(), (*tmp)->tempo().frame());
} else {
(*x)->set_position ((*x)->tempo().frame(), UINT32_MAX);
}
++x;
}
for (Marks::iterator x = metric_marks.begin(); x != metric_marks.end(); ++x) {
TempoMarker* tempo_marker;
if ((tempo_marker = dynamic_cast<TempoMarker*> (*x)) != 0) {
tempo_marker->update_height_mark ((tempo_marker->tempo().note_types_per_minute() - min_tempo) / max (max_tempo - min_tempo, 10.0));
}
}
compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + current_page_samples());
std::vector<TempoMap::BBTPoint> grid;
if (bbt_ruler_scale != bbt_show_many) {
compute_current_bbt_points (grid, leftmost_frame, leftmost_frame + current_page_samples());
}
draw_measures (grid);
update_tempo_based_rulers ();
}
void
Editor::redisplay_tempo (bool immediate_redraw)
{
if (!_session) {
return;
}
if (immediate_redraw) {
compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + current_page_samples());
std::vector<TempoMap::BBTPoint> grid;
if (bbt_ruler_scale != bbt_show_many) {
compute_current_bbt_points (grid, leftmost_frame, leftmost_frame + current_page_samples());
}
draw_measures (grid);
update_tempo_based_rulers (); // redraw rulers and measure lines
} else {
Glib::signal_idle().connect (sigc::bind_return (sigc::bind (sigc::mem_fun (*this, &Editor::redisplay_tempo), true), false));
}
}
/* computes a grid starting a beat before and ending a beat after leftmost and rightmost respectively */
void
Editor::compute_current_bbt_points (std::vector<TempoMap::BBTPoint>& grid, framepos_t leftmost, framepos_t rightmost)
{
if (!_session) {
return;
}
/* prevent negative values of leftmost from creeping into tempomap
*/
const double lower_beat = floor (max (0.0, _session->tempo_map().beat_at_frame (leftmost))) - 1.0;
switch (bbt_ruler_scale) {
case bbt_show_beats:
case bbt_show_ticks:
case bbt_show_ticks_detail:
case bbt_show_ticks_super_detail:
_session->tempo_map().get_grid (grid, max (_session->tempo_map().frame_at_beat (lower_beat), (framepos_t) 0), rightmost);
break;
case bbt_show_1:
_session->tempo_map().get_grid (grid, max (_session->tempo_map().frame_at_beat (lower_beat), (framepos_t) 0), rightmost, 1);
break;
case bbt_show_4:
_session->tempo_map().get_grid (grid, max (_session->tempo_map().frame_at_beat (lower_beat), (framepos_t) 0), rightmost, 4);
break;
case bbt_show_16:
_session->tempo_map().get_grid (grid, max (_session->tempo_map().frame_at_beat (lower_beat), (framepos_t) 0), rightmost, 16);
break;
case bbt_show_64:
_session->tempo_map().get_grid (grid, max (_session->tempo_map().frame_at_beat (lower_beat), (framepos_t) 0), rightmost, 64);
break;
default:
/* bbt_show_many */
_session->tempo_map().get_grid (grid, max (_session->tempo_map().frame_at_beat (lower_beat), (framepos_t) 0), rightmost, 128);
break;
}
}
void
Editor::hide_measures ()
{
if (tempo_lines) {
tempo_lines->hide();
}
}
void
Editor::draw_measures (std::vector<ARDOUR::TempoMap::BBTPoint>& grid)
{
if (_session == 0 || _show_measures == false || distance (grid.begin(), grid.end()) == 0) {
return;
}
if (tempo_lines == 0) {
tempo_lines = new TempoLines (time_line_group, ArdourCanvas::LineSet::Vertical);
}
const unsigned divisions = get_grid_beat_divisions(leftmost_frame);
tempo_lines->draw (grid, divisions, leftmost_frame, _session->frame_rate());
}
void
Editor::mouse_add_new_tempo_event (framepos_t frame)
{
if (_session == 0) {
return;
}
TempoMap& map(_session->tempo_map());
begin_reversible_command (_("add tempo mark"));
const double pulse = map.exact_qn_at_frame (frame, get_grid_music_divisions (0)) / 4.0;
if (pulse > 0.0) {
XMLNode &before = map.get_state();
/* add music-locked ramped (?) tempo using the bpm/note type at frame*/
map.add_tempo (map.tempo_at_frame (frame), pulse, 0, TempoSection::Ramp, MusicTime);
XMLNode &after = map.get_state();
_session->add_command(new MementoCommand<TempoMap>(map, &before, &after));
commit_reversible_command ();
}
//map.dump (cerr);
}
void
Editor::mouse_add_new_meter_event (framepos_t frame)
{
if (_session == 0) {
return;
}
TempoMap& map(_session->tempo_map());
MeterDialog meter_dialog (map, frame, _("add"));
switch (meter_dialog.run ()) {
case RESPONSE_ACCEPT:
break;
default:
return;
}
double bpb = meter_dialog.get_bpb ();
bpb = max (1.0, bpb); // XXX is this a reasonable limit?
double note_type = meter_dialog.get_note_type ();
Timecode::BBT_Time requested;
meter_dialog.get_bbt_time (requested);
const double beat = map.beat_at_bbt (requested);
begin_reversible_command (_("add meter mark"));
XMLNode &before = map.get_state();
if (meter_dialog.get_lock_style() == MusicTime) {
map.add_meter (Meter (bpb, note_type), beat, requested, MusicTime);
} else {
map.add_meter (Meter (bpb, note_type), beat, requested, AudioTime);
}
_session->add_command(new MementoCommand<TempoMap>(map, &before, &map.get_state()));
commit_reversible_command ();
//map.dump (cerr);
}
void
Editor::remove_tempo_marker (ArdourCanvas::Item* item)
{
ArdourMarker* marker;
TempoMarker* tempo_marker;
if ((marker = reinterpret_cast<ArdourMarker *> (item->get_data ("marker"))) == 0) {
fatal << _("programming error: tempo marker canvas item has no marker object pointer!") << endmsg;
abort(); /*NOTREACHED*/
}
if ((tempo_marker = dynamic_cast<TempoMarker*> (marker)) == 0) {
fatal << _("programming error: marker for tempo is not a tempo marker!") << endmsg;
abort(); /*NOTREACHED*/
}
if (tempo_marker->tempo().movable()) {
Glib::signal_idle().connect (sigc::bind (sigc::mem_fun(*this, &Editor::real_remove_tempo_marker), &tempo_marker->tempo()));
}
}
void
Editor::edit_meter_section (MeterSection* section)
{
MeterDialog meter_dialog (_session->tempo_map(), *section, _("done"));
switch (meter_dialog.run()) {
case RESPONSE_ACCEPT:
break;
default:
return;
}
double bpb = meter_dialog.get_bpb ();
bpb = max (1.0, bpb); // XXX is this a reasonable limit?
double const note_type = meter_dialog.get_note_type ();
const Meter meter (bpb, note_type);
Timecode::BBT_Time when;
meter_dialog.get_bbt_time (when);
const PositionLockStyle pls = (meter_dialog.get_lock_style() == AudioTime) ? AudioTime : MusicTime;
begin_reversible_command (_("replace meter mark"));
XMLNode &before = _session->tempo_map().get_state();
_session->tempo_map().replace_meter (*section, meter, when, pls);
XMLNode &after = _session->tempo_map().get_state();
_session->add_command(new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
commit_reversible_command ();
}
void
Editor::edit_tempo_section (TempoSection* section)
{
TempoDialog tempo_dialog (_session->tempo_map(), *section, _("done"));
switch (tempo_dialog.run ()) {
case RESPONSE_ACCEPT:
break;
default:
return;
}
double bpm = tempo_dialog.get_bpm ();
double nt = tempo_dialog.get_note_type ();
bpm = max (0.01, bpm);
const Tempo tempo (bpm, nt);
Timecode::BBT_Time when;
tempo_dialog.get_bbt_time (when);
const TempoSection::Type ttype (tempo_dialog.get_tempo_type());
begin_reversible_command (_("replace tempo mark"));
XMLNode &before = _session->tempo_map().get_state();
if (tempo_dialog.get_lock_style() == AudioTime) {
framepos_t const f = _session->tempo_map().predict_tempo_position (section, when).second;
_session->tempo_map().replace_tempo (*section, tempo, 0.0, f, ttype, AudioTime);
} else {
double const p = _session->tempo_map().predict_tempo_position (section, when).first;
_session->tempo_map().replace_tempo (*section, tempo, p, 0, ttype, MusicTime);
}
XMLNode &after = _session->tempo_map().get_state();
_session->add_command (new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
commit_reversible_command ();
}
void
Editor::edit_tempo_marker (TempoMarker& tm)
{
edit_tempo_section (&tm.tempo());
}
void
Editor::edit_meter_marker (MeterMarker& mm)
{
edit_meter_section (&mm.meter());
}
gint
Editor::real_remove_tempo_marker (TempoSection *section)
{
begin_reversible_command (_("remove tempo mark"));
XMLNode &before = _session->tempo_map().get_state();
_session->tempo_map().remove_tempo (*section, true);
XMLNode &after = _session->tempo_map().get_state();
_session->add_command(new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
commit_reversible_command ();
return FALSE;
}
void
Editor::remove_meter_marker (ArdourCanvas::Item* item)
{
ArdourMarker* marker;
MeterMarker* meter_marker;
if ((marker = reinterpret_cast<ArdourMarker *> (item->get_data ("marker"))) == 0) {
fatal << _("programming error: meter marker canvas item has no marker object pointer!") << endmsg;
abort(); /*NOTREACHED*/
}
if ((meter_marker = dynamic_cast<MeterMarker*> (marker)) == 0) {
fatal << _("programming error: marker for meter is not a meter marker!") << endmsg;
abort(); /*NOTREACHED*/
}
if (meter_marker->meter().movable()) {
Glib::signal_idle().connect (sigc::bind (sigc::mem_fun(*this, &Editor::real_remove_meter_marker), &meter_marker->meter()));
}
}
gint
Editor::real_remove_meter_marker (MeterSection *section)
{
begin_reversible_command (_("remove tempo mark"));
XMLNode &before = _session->tempo_map().get_state();
_session->tempo_map().remove_meter (*section, true);
XMLNode &after = _session->tempo_map().get_state();
_session->add_command(new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
commit_reversible_command ();
return FALSE;
}